When I want to trigger builds on other projects after my build , I fill in another project name with prefix ,the selector gives me some suggestions and I choose one. Then , a red line says "no such project '***' ,did you mean '**'?" . Then I click on the page ,and the red line goes away. Looks like when I'm chosing the suggested item ,jekins tries to use my prefix to find a matched project and it doesn't find it.So the red line appears.